怎么防止别人用网络剪刀手，剪我的机子

首先 ping你的网关
例如我的机器网关是 192.168.100.1
在运行中输入 cmd
然后输入ping 192.168.100.1
得到以下结果:
C:\>ping 192.168.100.1

Pinging 192.168.100.1 with 32 bytes of data:

Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64
Reply from 192.168.100.1: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.100.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

然后继续输入:arp -a
C:\>arp -a

Interface: 192.168.100.159 --- 0x2
Internet Address Physical Address Type
192.168.100.1 00-0a-eb-e5-20-a8 dynamic
这里可以看到192.168.100.1后面有一个物理地址00-0a-eb-e5-20-a8
我们接着输入arp -s 192.168.100.1 00-0a-eb-e5-20-a8
C:\>arp -s 192.168.100.1 00-0a-